FI930918A - FREQUENCY REQUIREMENT FOR HYDRAULIC LIFTING - Google Patents

FREQUENCY REQUIREMENT FOR HYDRAULIC LIFTING Download PDF

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Publication number
FI930918A
FI930918A FI930918A FI930918A FI930918A FI 930918 A FI930918 A FI 930918A FI 930918 A FI930918 A FI 930918A FI 930918 A FI930918 A FI 930918A FI 930918 A FI930918 A FI 930918A
Authority
FI
Finland
Prior art keywords
variable
speed
load
electric motor
case
Prior art date
Application number
FI930918A
Other languages
Finnish (fi)
Other versions
FI930918A0 (en
FI112791B (en
Inventor
Heinz-Dieter Nagel
Original Assignee
Inventio Ag
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=4192422&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=FI930918(A) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Inventio Ag filed Critical Inventio Ag
Publication of FI930918A0 publication Critical patent/FI930918A0/en
Publication of FI930918A publication Critical patent/FI930918A/en
Application granted granted Critical
Publication of FI112791B publication Critical patent/FI112791B/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B1/00—Control systems of elevators in general
    • B66B1/24—Control systems with regulation, i.e. with retroactive action, for influencing travelling speed, acceleration, or deceleration
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B50/00—Energy efficient technologies in elevators, escalators and moving walkways, e.g. energy saving or recuperation technologies

Landscapes

  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Elevator Control (AREA)
  • Types And Forms Of Lifts (AREA)
  • Forklifts And Lifting Vehicles (AREA)

Abstract

With this method and arrangement for conserving electric power for driving a hydraulic elevator, it is possible to drive the elevator car in the ascending direction with virtually constant power output at any load. The maximum rated speed in the ascending direction is selected for a load which from experience occurs most frequently. The requisite drive variable is set in accordance with this selection. The lifting speed is correspondingly reduced in the case of higher loads and correspondingly increased in the case of smaller loads. The variable lifting speed is obtained either by an adjusting pump (8) with a variable displacement volume, controlled by a pressure regulator (14), or by a displacement pump (28) with a constant displacement volume which is driven by a frequency-controlled electric motor (31) with continuously variable adaptation of the speed of the electric motor (31) as a function of the effective load present. <IMAGE>
FI930918A 1992-03-04 1993-03-02 Method and apparatus for saving electrical energy in a hydraulic lift actuator FI112791B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH67092 1992-03-04
CH67092 1992-03-04

Publications (3)

Publication Number Publication Date
FI930918A0 FI930918A0 (en) 1993-03-02
FI930918A true FI930918A (en) 1993-09-05
FI112791B FI112791B (en) 2004-01-15

Family

ID=4192422

Family Applications (1)

Application Number Title Priority Date Filing Date
FI930918A FI112791B (en) 1992-03-04 1993-03-02 Method and apparatus for saving electrical energy in a hydraulic lift actuator

Country Status (16)

Country Link
US (1) US5373121A (en)
EP (1) EP0558934B2 (en)
JP (1) JPH05338928A (en)
CN (1) CN1026813C (en)
AT (1) ATE141573T1 (en)
AU (1) AU660068B2 (en)
CA (1) CA2088893C (en)
CZ (1) CZ286024B6 (en)
DE (1) DE59303462D1 (en)
DK (1) DK0558934T4 (en)
ES (1) ES2093289T5 (en)
FI (1) FI112791B (en)
HU (1) HU212112B (en)
MX (1) MX9301151A (en)
NO (1) NO930756L (en)
SK (1) SK279308B6 (en)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4335403C1 (en) * 1993-10-18 1994-12-15 Karl Hehl Hydraulic device
DE4440420C3 (en) * 1994-11-07 2003-07-24 Demag Cranes & Components Gmbh Method and device for monitoring and / or controlling the speed of an electric drive with frequency converter for hoists
DE19511591C2 (en) * 1995-03-29 1997-02-06 Jungheinrich Ag Procedure for determining the load of an industrial truck
US5890562A (en) * 1996-08-16 1999-04-06 Bt Prime Mover, Inc. Control console for material handling vehicle
EP0915804B1 (en) * 1997-02-06 2003-05-21 Bucher Hydraulics AG Method and device for controlling a hydraulic lift
WO2001014238A1 (en) * 1999-08-25 2001-03-01 Beringer-Hydraulik Ag Hydraulic elevator, comprising a pressure accumulator which acts as a counterweight and a method for controlling and regulating an elevator of this type
JP2004003612A (en) * 2002-04-09 2004-01-08 Komatsu Ltd Cylinder drive system and method for regenerating its energy
DE10261225B4 (en) * 2002-12-20 2006-11-16 Dorma Gmbh + Co. Kg Electrohydraulic servo door drive for driving a door, a window or the like
US20090099714A1 (en) * 2007-10-12 2009-04-16 Ajith Kuttannair Kumar System and method for dynamically determining a force applied through a rail vehicle axle
US20090095194A1 (en) * 2007-10-12 2009-04-16 Ajith Kuttannair Kumar System and method for dynamically affecting a force applied through a rail vehicle axle
DE102012106031B3 (en) * 2012-07-05 2013-07-11 Römer Fördertechnik GmbH Electrohydraulic lifting device and method for controlling the electrohydraulic lifting device
CN103267038B (en) * 2013-05-09 2017-02-08 洛阳理工学院 Hydraulic control loop capable of controlling multiple lifting platforms
CN104481947A (en) * 2014-12-08 2015-04-01 西南铝业（集团）有限责任公司 Hydraulic control system shared by tilting furnaces
CN104627837B (en) * 2015-02-11 2016-06-08 河海大学常州校区 A kind of accurate hoisting machine tool of driving a vehicle
CN104609315B (en) * 2015-02-11 2016-06-29 河海大学常州校区 A kind of accurate hoisting machine tool of driving a vehicle

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1184055B (en) † 1959-05-27 1964-12-23 Kaemper Motoren G M B H Hydraulically driven hoist
CH465805A (en) * 1967-01-06 1968-11-30 Leipzig Inst Foerdertech Hydrostatic drive with counterweight system, especially for elevators
US3762165A (en) * 1970-12-07 1973-10-02 Hitachi Ltd Hydraulic elevator apparatus
JPS5326378B2 (en) * 1972-03-15 1978-08-02
DE2658928A1 (en) † 1976-12-24 1978-07-06 Beringer Hydraulik Gmbh HYDRAULIC CONTROL
GB1579834A (en) * 1976-12-24 1980-11-26 Eimco Grat Britain Ltd Fluid transmission circuits
JPS60246412A (en) * 1984-05-21 1985-12-06 Mitsubishi Electric Corp Carrying device
NL8701922A (en) * 1987-08-14 1989-03-01 Jacobus Leonardus Saam Hydraulic lift drive - has adjustable motor for both directions of travel without governor block but with pump and electromagnetic drop valve
FI83204C (en) * 1987-11-04 1991-06-10 Kone Oy FOERFARANDE OCH ANORDNING FOER FOERBAETTRING AV VERKNINGSGRADEN HOS EN MOTORSTYRD HYDRAULHISS.
JPH03159879A (en) † 1989-11-20 1991-07-09 Toyota Autom Loom Works Ltd Loading/unloading control device for industrial vehicle
JP2628397B2 (en) * 1990-04-25 1997-07-09 回生工業株式会社 Speed control method of hydraulic elevator using inverter power supply
JP2533683B2 (en) * 1990-10-16 1996-09-11 三菱電機株式会社 Control device for hydraulic elevator

Also Published As

Publication number Publication date
FI930918A0 (en) 1993-03-02
EP0558934B1 (en) 1996-08-21
AU3392093A (en) 1993-09-09
CN1026813C (en) 1994-11-30
ES2093289T5 (en) 2001-04-01
HU9300433D0 (en) 1993-05-28
CZ286024B6 (en) 1999-12-15
EP0558934B2 (en) 2000-12-06
CA2088893A1 (en) 1993-09-05
SK279308B6 (en) 1998-09-09
NO930756L (en) 1993-09-06
CN1077256A (en) 1993-10-13
DE59303462D1 (en) 1996-09-26
HU212112B (en) 1996-02-28
MX9301151A (en) 1993-09-01
US5373121A (en) 1994-12-13
EP0558934A1 (en) 1993-09-08
SK10393A3 (en) 1993-10-06
ATE141573T1 (en) 1996-09-15
HUT64610A (en) 1994-01-28
DK0558934T4 (en) 2001-03-05
JPH05338928A (en) 1993-12-21
CA2088893C (en) 2003-11-25
FI112791B (en) 2004-01-15
CZ17893A3 (en) 1993-11-17
NO930756D0 (en) 1993-03-02
ES2093289T3 (en) 1996-12-16
AU660068B2 (en) 1995-06-08
DK0558934T3 (en) 1996-12-23

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